package cn.saltybe.analysis.util;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class NumberUtils {
    public static boolean isNumeric(String str) {
        if (str == null || str.length() == 0) return false;
        Pattern pattern = Pattern.compile("[0-9]*");
        Matcher isNum = pattern.matcher(str);
        if (!isNum.matches()) return false;
        return true;
    }
}
